OpencV、空域滤波器（中值，均值，最大最小值...）-This code is designed for space filter

and it is derived　Digital Image Processing Matlab edition in page117

it has ArithmeticM_filter for Arithmetic Mean filtering

GeometricM_filter for Geometric Mean filtering

HarmonicM_filter for harmonic Mean filtering

conHarmonicM_filter for contrahamonic Mean filtering

Median_filter for median filtering

Max_filter for maximum filtering

Min_filter for minimum filtering

MidPoint_filter for mid point filtering